On 4 October 2013 20:28, Jan Kandziora <j...@gmx.de> wrote:
>  [snip]
> In addition,
> measuring low temperatures with parasite power is bad, as it heats the
> sensor and thus, gives you slightly wrong temperature values.

I don't understand why this is worse when measuring low temperatures
than high.  If measuring with parasitic power puts in a certain amount
of power (say 10mW average for example) then I would have thought this
would raise the temperature of the sensor by an amount depending on
the thermal conductivity to the environment (say, 0.5 degree, for
example).  It should not depend on the absolute temperature.  In other
words it should raise the temperature by 0.5 degrees (or whatever the
value is in any particular case) whether the ambient is -10C or +30C.

Colin

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